Base | Representation |
---|---|
bin | 111010111000… |
… | …0010011011001 |
3 | 2011002021220002 |
4 | 1311300103121 |
5 | 30400244242 |
6 | 3021342345 |
7 | 523244126 |
oct | 165602331 |
9 | 64067802 |
10 | 30868697 |
11 | 16474122 |
12 | a4079b5 |
13 | 651a502 |
14 | 415774d |
15 | 2a9b432 |
hex | 1d704d9 |
30868697 has 4 divisors (see below), whose sum is σ = 31259520. Its totient is φ = 30477876.
The previous prime is 30868661. The next prime is 30868699. The reversal of 30868697 is 79686803.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 30868697 - 212 = 30864601 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30868699) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195293 + ... + 195450.
It is an arithmetic number, because the mean of its divisors is an integer number (7814880).
Almost surely, 230868697 is an apocalyptic number.
It is an amenable number.
30868697 is a deficient number, since it is larger than the sum of its proper divisors (390823).
30868697 is an equidigital number, since it uses as much as digits as its factorization.
30868697 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 390822.
The product of its (nonzero) digits is 435456, while the sum is 47.
The square root of 30868697 is about 5555.9604930201. The cubic root of 30868697 is about 313.6939185383.
The spelling of 30868697 in words is "thirty million, eight hundred sixty-eight thousand, six hundred ninety-seven".
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